U.S. chances to medal: No American has stood on the cross-country podium since Bill Koch won silver at the 1976 Innsbruck Games. Randall could end that drought and become the first U.S. woman to medal in this sport.

Little-known fact: Skiathlon combines the classic and free, or skating, styles of cross-country. Competitors stop midrace and, with the clock running, switch skis to accommodate the change in technique.